Black Jack 21点游戏 C++

Black Jack is a poker game

· Process:

1. Define the card or shuffle the card

2. Player get 2 cards

3. Player get points

4. Player determines whether to continue to ask for cards

5. If player continue ask for cards, player get 1 card, the player points accumulated

6. If player don’t ask for cards, count the player points

7. Dealer get 2 cards

8. Dealer determines whether to continue to ask for cards

9. If dealer continue ask for cards, dealer get 1 card, the dealer points accumulated

10. If dealer don’t ask for cards, count the dealer points

11. Compare the player points with the dealer points

12. The round is end

· Module: class

Poker Card

Player

Dealer

Compare the Points

代码块：

#include <iostream>
#include <string>
#include <cstdlib>
#include <ctime>
using namespace std;
#define MAXVALUE 200
//Build the playcard class
class PlayCard
{
public:
    //Define the poker and poker points, or reshuffle.
    void initSet();
    //Output the whole playcard and points
    void showCard();
    string randomPlay();
    //Get the playcard points of the current role
    void getValue(string &getPoints, int &userPoints);
protected:
    string colors[4];
    string numbers[13];
    string arr[52];
    string currentCard;
    int cardPoints[52];
    int currentPoints;
    int cardCount;
};
//Build the player class
class Player: public PlayCard
{
public:
    //return the points of the player
    int pointsCount(int sign);
    void getResult();
    int playerPoints;
    int sumCount;
};
//Build the dealer class
class Dealer: public PlayCard
{
public:
    //return the points of the dealer
    int pointsCount(int sign);
    void getResult();
    int dealerPoints;
    int sumCount;
};
//Build the compare class, used for compare the player points with the dealer points
class Compare: public Player, public Dealer{
public:
    void compare(int &playerpoints, int &dealerpoints);
};
int main()
{
    PlayCard playCard;
    playCard.initSet();
    Player player;
    Dealer dealer;
    Compare result;
    for(int i = 0; i < MAXVALUE; i++){
        player.getResult();
        dealer.getResult();
        result.compare(player.sumCount, dealer.sumCount);
        int next;
        cout<<"\nNext Round? 1.Yes 2.No : ";
        cin>>next;
        if(next==1) {
            system("cls");
            continue;
        }
        else break;
    }
    system("pause");
    return 0;
}
void PlayCard::initSet(){
    string col[4] = {
    "\003", "\004", "\005", "\006"};
    string num[13] = {
    "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K", "A"};
    cardCount = 52;
    //Assign decors and points to the array
    for(int i = 0; i < 4; i++){
        colors[i]=col[i];
    }
    for(int i = 0; i < 13; i++){
        numbers[i]=num[i];
    }
    //Mix decors and points into an array
    int index = 0;
    string tempCombin;
    for(int i = 0; i < 4; i++){
        for(int j = 0; j < 13; j++){
            if(j < 8){
                tempCombin = colors[i].append(numbers[j]);
                arr[index++] = tempCombin;
                colors[i].erase(colors[i].end()-1);
            } else if(j == 8){
                tempCombin = colors[i].append(numbers[j]);
                arr[index++] = tempCombin;
                colors[i].erase(colors[i].end()-2);
                colors[i].erase(colors[i].end()-1);
            } else {
                tempCombin = colors[i].append(numbers[j]);
                arr[index++] = tempCombin;
                colors[i].erase(colors[i].end()-1);
            }
        }
    }
    //Convert playcards to integer points
    for(int i = 0, number = 2; i < cardCount; i++){
        if(i == 0 || i == 13 || i == 26 || i == 39){
            number = 2;
        }
        if(i == 12 || i == 25 || i == 38 || i == 51){
            cardPoints[i] = 11;
            continue;
        }
        if(number > 10){
            number = 10;
        }
        cardPoints[i] = number++;
    }
}
void PlayCard::showCard(){
    for(int i = 0; i < 52; i++){
        if(i%13 == 0){
            cout<<endl;
        }
        cout<<arr[i]<<" ";
    }
    cout<<endl;
    for(int i = 0; i < 52; i++){
        if(i%13 == 0){
            cout<<endl;
        }
        cout<<cardPoints[i]<<" ";
    }
    cout<<endl;
}
string PlayCard::randomPlay(){
    //Give a random seed as an array subscript for the whole deck of cards
    unsigned seed;
    seed = time(0);
    srand(seed);
    int index = rand()%51;
    //Obtain the number of points of the current card and set it empty. 
    //If the current card is empty, re issue the random seed. 
    //If the number of empty cards is less than the half number of the whole 
    //deck (i.e. 26), shuffle the cards again.
    for(int i = 0; i < MAXVALUE; i++){
        if(cardCount >= 26 && arr[index] != " "){
            currentCard = arr[index];
            currentPoints = cardPoints[index];
            arr[index] = " ";
            cardCount--;
            break;
        } else if(cardCount >= 26 && arr[index] == " "){
            index = rand()%51;
        } else {
            initSet();
        }
    }
    return currentCard;
}
void PlayCard::getValue(string &getPoints, int &userPoints){
    getPoints = randomPlay();
    cout<<getPoints<<" ";
    if(currentPoints == 11 && (userPoints+currentPoints)>21){
        currentPoints = 1;
        userPoints += currentPoints;
    } else if(currentPoints == 11 && (userPoints+currentPoints)<=21){
        userPoints += currentPoints;
    } else {
        userPoints += currentPoints;
    }
}
int Player::pointsCount(int sign){
    string getPoints;
    playerPoints = 0;
    cout<<"Player Card: ";
    //sign=0, first random play
    //sign=1, next random play
    if(sign == 0){
        for(int i = 0; i < 2; i++){
            getValue(getPoints, playerPoints);
        }
    } else if(sign == 1){
        getValue(getPoints, playerPoints);
    }
    cout<<endl;
    return playerPoints;
}
void Player::getResult(){
    int choice;
    sumCount = 0;
    sumCount += pointsCount(0);
    cout<<"Player Points: "<<sumCount<<endl;
    for(int i = 0; i < MAXVALUE; i++){
        if(sumCount < 21){
            cout<<"Do you want to continue? 1.Yes 2.No : ";
            cin>>choice;
            if(choice == 1){
                sumCount += pointsCount(1);
                cout<<"Player Points: "<<sumCount<<endl;
            } else if(choice == 2){
                cout<<"Player Points: "<<sumCount<<endl;
                break;
            } else {
                cout<<"Error! Retry!\n";
                continue;
            }
        } else if(sumCount == 21){
            break;
        } else {
            break;
        }
    }
    cout<<endl;
}
int Dealer::pointsCount(int sign){
    string getPoints;
    dealerPoints = 0;
    cout<<"Dealer Card: ";
    //sign=0, first random play
    //sign=1, next random play
    if(sign == 0){
        for(int i = 0; i < 2; i++){
            getValue(getPoints, dealerPoints);
        }
    } else if(sign == 1){
        getValue(getPoints, dealerPoints);
    }
    cout<<endl;
    return dealerPoints;
}
void Dealer::getResult(){
    int choice;
    sumCount = 0;
    sumCount += pointsCount(0);
    cout<<"Dealer Points: "<<sumCount<<endl;
    for(int i = 0; i < MAXVALUE; i++){
        if(sumCount < 21){
            cout<<"Do you want to continue? 1.Yes 2.No : ";
            cin>>choice;
            if(choice == 1){
                sumCount += pointsCount(1);
                cout<<"Dealer Points: "<<sumCount<<endl;
            } else if(choice == 2){
                cout<<"Dealer Points: "<<sumCount<<endl;
                break;
            } else {
                cout<<"Error! Retry!\n";
                continue;
            }
        } else if(sumCount == 21){
            break;
        } else {
            break;
        }
    }
    cout<<endl;
}
void Compare::compare(int &playerpoints, int &dealerpoints){
    if((playerpoints<=21)&&(dealerpoints<=21)&&(playerpoints>dealerpoints)){
        cout<<"Player Win!!!"<<endl;
    }
    if((playerpoints<=21)&&(dealerpoints<=21)&&(dealerpoints>playerpoints)){
        cout<<"Dealer Win!!!"<<endl;
    }
    if((playerpoints<=21)&&(dealerpoints<=21)&&(playerpoints==dealerpoints)){
        cout<<"Draw!"<<endl;
    }else if(playerpoints>21){
        cout<<"Dealer Win!!!"<<endl;
    }else if(dealerpoints>21){
        cout<<"Player Win!!!"<<endl;
    }
}